README.md in m-1.3.3 vs README.md in m-1.3.4

@@ -48,11 +48,11 @@
   # ...
   gem.add_development_dependency "m", "~> 1.3.1"
 end
 ```
 
-m works on Ruby 1.9+ only.
+m works on Ruby 2.0+ only.
 
 
 USAGE
 =====
 
@@ -126,19 +126,24 @@
 
 
 CONTRIBUTING
 ============
 
-You can run the tests for minitest 4 with:
+You can run all the tests with:
 
-    rake appraisal:minitest4 test
+    bundle exec rake tests
 
+You can also run tests selectively. For minitest 4 run:
+
+    appraisal minitest4 rake test
+
 and the ones for minitest 5 with:
 
-    rake appraisal:minitest5 test TEST=test/minitest_5_test.rb
+    appraisal minitest5 rake test TEST=test/minitest_5_test.rb
 
-In the case of minitest 5 the whole suite will fail due to incompatibilities
-with ruby (at least until 2.1.1).
+In the case of minitest 5, we have to specify the test to run, because running
+the whole suite will fail due to incompatibilities with ruby (at least until
+2.1.1).
 
 
 LICENSE
 =======